[rquote=1577892&tid=109578&author=SNA2STL]The easiest and fastest way is reverse engineering. Clamp the top of the boot AIR tight! Submerge boot in water, where you see air bubbles, you apply your water proof sealant. Just make sure to use a sealant that dries to a rubber feel, or if on the sole, then a shoe repair cement. After years, and miles of backpacking I KNOW this works on the smallest of leaks. Sealing the top of the shoe can be as simplistic as wrapping a plastic bag with a rubber band. The greater depth you get the shoe you get increased pressure from the air being compressed and eventually finding a way to release the pressure. Remember fixing a bicycle tube as a kid, just like that![/rquote]
Hmm, a set of quik-clamps, a 5-gal. bucket full of water, an air compressor with a blow-off wand...:thinking::2thumbsup: